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Scientists increase lithium-sulfur battery lifetime by a factor of 10

One alternative is lithium-sulfur (Li-S) batteries, which are attractive for their high gravimetric energy density that ... has developed a Li-S battery that can retain more than 80% of its 1180 mAh/g capacity over 300 cycles, with the potential for ...

Top 20 Best iPhone X Accessories: Compare, Buy & Save

While Airpods are fun and usually practical, there’s always going to be those time when one loses a bud, forgets to charge them, or simply wants to use a pair of powerful headphones ... It prints cute 2 x 3 inch images that are also stickers.

Lumsing is offering a pair of Bluetooth ... to keep your batteries topped off wherever you go. The 20,000mah external charger is particularly interesting due to its massive capacity and three USB ports. I'm not sure I've ever seen another one like that.

Finally Upgrade to a Projector, Sing in the Shower, and More Deals

That's free money, folks. Your easiest option here is to get a 3-pack of $15 cards, but you can get higher denominations if you want to give them away as gifts. Just enter code HOLIDAYGCS at checkout to get the deal. Weirdly, you have to be a "new" gift ...

A high-rate and long cycle life aqueous electrolyte battery for grid-scale energy storage

This high-rate, high-efficiency cell has a 95% round-trip energy efficiency when cycled at a 5C rate, and a 79% energy efficiency at 50C. It also has zero-capacity loss after 1,000 deep-discharge cycles. Figure 1: Full cell schematic and physical ...

Li-ion rechargeable batteries that last longer, re-charge more rapidly

"Under laboratory conditions, we were able to enhance storage capacity by a factor of up to 3 ... enhanced batteries could be ready for the market within one or two years." The procedure is simple, cost-effective and scalable for use on rechargeable ...

Official Nintendo Switch Technical Specifications Have Been Shared

It does, however, cover details around the physical hardware itself, also outlining some features. One that's relatively pleasing is the Wireless LAN support, which is compliant right up to the ac standard that was only formally implemented in 2013 ...

Vita Gets a Birthday Sale, Titanfall Falls to $6, and More Deals

Starting today, Vita owners can save on nearly 40 digital games during Sony's Vita Birthday Sale. Check out the full list here. Samsung’s EVO line was basically built to be the best Solid State bang for your buck, so it’s no…

Electrical Measuring Instruments General Catalog

The LR8520 is a wireless logger designed to easily predict the start of fungal growth based on 2 ... 3 Pollution Degrees If contaminants adhere to the surfaces of a measuring instrument, its insulation performance will fall and it will pose a high risk ...